Lighting apparatus.



No. 643,8I4. Patented Feb. 20, |900 R. lM. DIXON.

LIGHTING APPARATUS. (Application led Dec. 7, 1807.) (No Model.) 4

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UNITED STATES PATENT OFFICE.

ROBERT M. DIXON, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO THE SAFETY CAR HEATING AND LIGHTING COMPANY, OF NEIV JERSEY.

LIGHTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 648,814, dated February 20, 1900. Application tiled December '7, 1897. Serial No. 661,085. (No model.)

To @ZZ whom it may concern.-

Beit known that I, ROBERT M. DIXON, a citizen of the United States, residing at East Orange, State of New Jersey, have invented new and useful Improvements in Lighting Apparatus, of which the following is a specification.

My invention relates to the production of light, and is more speciiically designed to produce a lamp for lighting cars or other apartments in which two or more sets of light-giving apparatus are so combined that they may be used alternately or in conjunction, while the exterior of the apparatus will present the appearance of and is, in fact, a single unitary lamp structure.

In the lighting of the interior of railwaycars, for which my invention is more specifically adapted, itv is sometimes desirable to use the electric current for lighting where the cars are coupled up in a train employing electric lighting, or a source of electric current is otherwise provided. At the same time it is important to have a separate means of producing light which may be supplied by gasfor instance, when no source of electricity is at hand. Moreover, the double lamp is advantageous even where both gas and electricity are available, since one may be used to supplement the other in case of a breakdown.

The preferred form of my invention is shown in the accompanying drawing, in which is illustrated in section a lamp attached to the roof of a car or other compartment.

1 represents a portion of the ceiling or roof structure of the car, to which the ring of metal 2 is fastened by screws 3 3 or; other convenient fastening means. On the fixed ring is hinged the ring 4 in the usual manner, and to this is attached the bowl 5 of the lamp in any convenient way, as by means of the outwardly-turned lip 6, held between the two packing-rings 7 and 8, which in turn are held in place by the overhanging metal ring 9. This metal ring 9 may be removed by taking out the short screws 9? 9"', shown at either side of the drawing. The glass bowl 5 can then be removed. Within the bowl 5, which is of glass, is supported any suitable form of gas or other burner 10. have illustrated a circular burner supplied by the central feedpipe 12, having the deflecting-shields 13 and 14 and the chimney 15. This burner is supported from the spider 16, fixed in the circular opening 17 in the roof.

18 is any convenient form of wind-deflecting hood for the lamp.

-The gas-supply pipe 19 has a valve 20, the spindle of which, 21, projects down through the roof and has a handle 22, by which the valve may be operated from the interior of the car. I preferably mount this valve on a cylinder 23, which is cast integrally with the valve-casing and within which is the concentric sleeve 211 for the valve stem or spindle. This protecting shell or cylinder passes down through the ceiling and opens into the space confined by the lamp-bowl and its supporting-rings.

Supported on the spider 25 is the reiiector 26, having its under side glazed with porcelain or other refractory light-reiiecting coatin g. Through the reflector a number of openings 27 27 are formed and through these project electric lamps 28 28, which-are attached to the carleiling and connected to the maincircuit electric wires. (Not shown.)

The mode of operating my invention is evident from the foregoing description. When the car is provided with or connected to a I source of electric current, the electric lamps 28 28 are caused to glow, and light is thrown down into the car by the reiiector 26. When no electric current is obtainable, the valve 20 is opened and the gas-burner 10 is lighted, the same reflector acting to diffuse the light through the car.

A special advantage of the valve construction illustrated is that any leakage about the valve-stem is conducted by the cylinder or shell 23 down to the inclosed space of the` lamp, and such gas so leaking from the valve is carried up by the draft of the lamp to the hood 18 and discharged into the open air, thus preventing the oensive smell of such gas from disturbing the occupants of the ear. l

The advantages of the apparatus as a whole consist in the combination of two sets of lightgiving apparatus in operative relation to one reflector and embodied in a single lamp structu re.

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Having therefore described my invention, what I claim as new, and desire to protect by Letters Patent, is-

l. In a lamp structure, a concave reflector having a central opening and a series of lateral openings, a gas-burner located under the reiiector, a series of electric lamps projecting inwardly through the lat-eral openings in said reiiector, and a globe inclosing both the gasburner and the electric lamps.

2. In combination with the inclosing globe of a gas-lamp, and the gas-supply pipe and valve therein, of a valve stem projecting through the outer shell of the lamp structure, and the extension to the valve-casing surrounding said valve-stem and opening into the in closing globe, substantiallyas described.

3. The combination of the car-ceiling the gassupply pipe and valve above said ceiling, the inclosing lamp-globe fastened to the under side of said ceiling, the valve-stem eX- tending down through said ceiling and lampglobe, and the shell surrounding said stem, which shell is cast integrally with the valvecasing, and extends through the car-ceiling and opens into the inclosure Within the lampglobe, substantially as described.

In testimony whereof I affix my signature in the presence of two Witnesses.

ROBERT M. DIXON.

Witnesses:

E. W. BULKLE'Y, J No. J. MALLAY. 

